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Added x86_64 System V ABI extern(D) TODO note.

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David Nadlinger
2013-02-03 17:12:32 +01:00
parent f806ec0ed5
commit 2be27279c7
1 changed files with 10 additions and 0 deletions
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10
gen/abi-x86-64.cpp
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@@ -7,6 +7,16 @@
//
//===----------------------------------------------------------------------===//
//
// BIG RED TODO NOTE: On x86_64, the C ABI should also be used for extern(D)
// functions, as mandated by the language standard and required for DMD
// compatibility. The below description and implementation dates back to the
// time where x86_64 was still an exotic target for D. Also, the frontend
// toArgTypes() machinery should be used for doing the type classification to
// reduce code duplication and make sure the va_arg implementation is always
// up to date with the code we emit.
//
//===----------------------------------------------------------------------===//
//
// extern(C) implements the C calling convention for x86-64, as found in
// http://www.x86-64.org/documentation/abi-0.99.pdf
//